look up any word, like sex:
 
1.
When something is so gay (here meaning 'awful') that it cannot be defined in terms of anything other than the most awful thing to happen to literature this century.

Most often applied to books, bookish people or book-related things.
Louise: Did you read that poem Martin sent you?
Una: Yeah, it was 50 shades of gay.
by Richard Brook July 03, 2012